Sony has been on something of a hot streak over the past few years with its smartphones. This peaked in 2014 with the Xperia Z3.
Featuring top-end components including a 20.7MP rear camera sensor and IP certified design, the Xperia Z3 was one of 2014's best handsets and actually beat the Nexus and iPhone 6 in our triple head-to-head review.
Sony has now unveiled the Xperia Z4 in Japan, and smartphone fans have been racing to get all the information they can on the Android Lollipop device.
To learn more about the Xperia Z4 and explore its new features, use our interactive picture guide below. Roll your mouse over the device to see the key elements and click on the tags that appear.